On Thu, Nov 14, 2002 at 02:53:59PM -0800, Crist J. Clark wrote:
I've been looking for some technical descriptions on how DirecPC works from a TCP/IP point of view. Does anyone out there have some references? I have not been able to find anything too detailed, and from what I have been told, they are not too forthcoming when contacted directly.
I know the rough outline. The customer sends out traffic over a normal PPP link (since the customer has no uplink to the DirecPC satellite) to a separate ISP. The traffic has a spoofed source address set to some DirecPC server at their ground site(s). Thus, the third-party target's response goes to DirecPC who send it over their satellite link back to the customer using the wide satellite pipe instead of the narrow PPP pipe.
I'm not sure how many users are on the legacy system still, but the latest DirecPC service "DIRECWAY" is actually two-way satellite connectivity without the need for a dial uplink. -c